Hello XJ Bikes and greetings from Salt Lake City. Multi-month lurker, first time poster. Backstory (warning: long): I have done work on all my own vehicles. First car was a 2003 BMW 325xi that ended up supercharged, A/A intercooler with meth injection at the compressor to increase air density, custom AFR/Boost gauges in the vents, full suspension, transmission flashed, custom ECU mapped, custom ECU programing (NCS Exper), custom swapped headlights, header back custom exhaust system, on and on and on. Younger brother totaled it. Second car: 2003 M3 (also white but w/ Cinnamon interior), SSV3 headers, euro cats, SCZA exhaust, hardwired radar detection, then bone stock w/ lots of maintenance. Still have that one. Third car: 2008 Kia Rio 1.6 Limited trim. Got that as a beater while the M3 was down getting clutch done and other transmission work. Paid 999 at a dealership with 118k miles. Wrenched on that for awhile then sold it when #4 came along. Fourth car: 2019 Hyundai Veloster Turbo R-Spec in sunset orange. Had no intention of replacing the Kia (but I was tired of hitting 4k rpm before crossing an intersection at 12mph) and on a whim test drove one for the $50 Amazon gift card. Fell in love. Back In March my younger brother revealed that he has owned an XS400 for a year. I was missing having a project to wrench on. I kept begging him to let me wrench on it. "Yeah I'll get it over to my place. I still don't have the title." Blah blah blah blah. First mistake: Found this XJ on the local classifieds in late April. $500, PO said it runs great, but was stuck in first. Started to research, found XJBikes, found the guidectomy information, figured "this would be easy to fix up, then flip for a couple hundred profit." Second mistake: Went to see the bike, made ALL the first time used bike buyer mistakes. Didn't start the bike, didn't ride it (had only ridden dirt bikes prior), didn't look at the title closely. Title got sorted, PO sent documents from out of country. Third mistake: Picked the bike up by loading it into a borrowed truck with some 2x12s. Heavy tow package, extended bed, no hills nearby, found the bike did not start, ofc still stuck in gear with one out-of-shape friend 1hr+ from home. Queue two hours of sweat and one falling 2x12. No damage to truck (except liftgate trim, easy fix) and one EGA bolt caught and bent away from header (more on that later). History of findings, fixes, and a couple 'mods': -PO said the carbs had been worked by a 'buddy' 12 months ago. Found them incredibly fouled. Emulsion tubes were almost glued in with varnish and green (ethanol?) crystallization. Jets were all chowdered up at the screw slots, mismash of screws on the top hats with chowdered heads (clearly the PO or his buddy didn't know about JIS drivers), float needles were all seized and varnished into their seats, main needles looked to be coated in green laquer (really just varnish and ethanol fallout), etc. Idle circuits plugged, enrichment plungers seized, THE WORKS. Fourth mistake: -'Rebuilt' carbs with a Damineding kit from Niche Cycle (didn't realize until later that I paid $60 for a $20 kit of four 'rebuild' 'kits.' Went through all passages with carb cleaner and compressed air (mixture needles and o-rings OUT). Set float heights to 17.5mm with a set of digital calipers. Did not realize the needles may be a different height. The bike runs! It starts! -Fished out two large chunks of primary guide, including one with the center, blank steel tab. This tells me the cases has probably never been split. The bike shifts! I can select gears! Fifth mistake: -Test rode the bike on the spiderweb-cracked dry-rotted, horrifically dangerous tires. Went for about a half mile ride to make sure the bike 'worked.' Sixth mistake: -Fell in love.