Hi Naz,
No the GCV carby is not compatible with any of the other carbies. I find usually I can salvage the gaskets. I wouldn't putt too much effort into chasing gaskets till you can prove the carby will work. I havea50%failure rate with them even after I have put them through the ultrasonic cleaner. As long as you get the gaskets on the suction side of the carby set up ok and if one is a bit damaged a bit of silicone or gasket sealer will seal it up. At this stage I don't bother fitting the air filter housing because it is a pain in the arse to set it up and hold the gaskets and spacer in position. I use a couple of 10mm nuts on the bolts so I can run the motor and make sure the carby is going to work properly . Not easy, pig of a thing but that is what you have to work with. Just take it gently because they can be very frustrating first time around. Good luck
