Scooter running bad - swollen diaphragm!!

[chops]

I washed my bike last weekend and afterward it would not start. So I left it at work In front of the big fan heater,and on Monday morning it started first click.
Then on the way home I noticed it was running really lumpy at most throttle positions!
Now today on my way to work it gradually lost power and cut out twice on a 3 mile run but did start again and spluttered my way to work slowly!

I have now took the carb off and drained it and checked the jets and have also checked the diaphragm for holes which there are non, but I cannot get te diaphragm back on... It just seems to big and swollen!! Could this be the cause of my issues??
Any help is very much appreciated.
Thanks

[ozark]

Did you expose the diaphragm to any cleaning chemicals?

Remove the diaphragm and let sit for 24hrs and the rubber should shrink or just replace it with a new one. Drain your gas tank and add some fresh petrol.
Good luck and keep us posted.

[chops]

I've managed to get the diaphragm back in but it's still running sh!te. Will have to wait until next week now as I'm off home to have a few beers.