Carbs, one diaphragm with a tiny hole

So I got a second set of carbs (Mikuni BS33) for my '86 Maxim-X to break down, clean, rebuild and setup, while I can still use my bike for commuting.
But, one of the carbs has a tiny hole in its diaphragm. I can replace that one including the needle with one from a carb that is still on my bike after I'm done wet-setting and bench-synching, but I'm wondering if there's another way.
Is there a product that can be used to repair the tiny hole that will not dissolve once the carb is on the bike? Or any other tips maybe?

Thanks in advance.

edit;

did some searching on the web and found this: http://www.650central.com/frepairing_a_ ... rb_dia.htm.
Has anyone ever tried Plasti-Dip spray to repair a diaphragm?

 

Plastidip spray is an interesting idea. Its fairly easily damaged by gasoline and oil, but if the damage is very small and you keep the spray on the top side, you may be OK.

What I have seen reported as working is a thin smear of silicone rtv gasket paste. Makes sense to me - its oil resistant (not sure about petrol) and can make a very thin layer. Unlike a spray, you wouldn't need to cover the whole thing, so it might not affect flexibility as much.

 

if ever faced with that problem, i'am going to try a dab of yamabond

 

I used a dab of some black paste from parts store to fix mine, forget now what it was, but it has held up fine. Well, Bike seems fine so I guess it is working.

 

At one time I would have recommended Liquid Electrical Tape. But long-term reliability testing has shown that it won't hold up in such applications. It's GREAT used as intended; it's not as durable as one would have hoped when used other than as intended..

Plastidip isn't solvent-resistant nor that flexible.

I'd go with the TINIEST smear of RTV (on both sides, so it "locks" together) or Polock's suggestion of Yamabond (again, I'd do a tiny thin smear on each side.)

 

G'day,

I had the same issue with my XJ650 RJ a few years back and bit the bullet and ordered 4 replacement diaphragms from this company:

http://jbmindustries.com/

At only $20 per diaphragm I thought I could not loose. I installed them as soon as they arrived and cannot recommend them highly enough!

I did a bench synch, then put it all back together. I used a YICS tool to get things perfect, something I could not get with the old diaphragms.

They stayed in place with no issues, so I ordered another set for my FJ1100, again, worked great.

Give them a go, nothing to loose.

cheers, Gareth

 

Yeah replacement is probably the best bet. If you have holes all the rubber is failing and only a matter of time before others appear

 

I found with mine that the bigger problem were the needle size holes, barely noticeable to the naked eye, but if I held them up to the light it was like seeing stars!

cheer,s Gareth

 

Thanks all for your responses.
I'm going to give it a shot with some RTV or Yamabond, depending on which one I can get my hands on first
Much appreciated, I'll let you know the results.