I was not sure where to post this question since I went thru most of the threads and didn't see anything on this subject.. I apologize if I have missed it if it was posted before.
I have a Cox 1.4 chainsaw motor, that used to be marketed under the name of Roper 1.4, which uses a side mounted crankcase ported carb. It uses a twin brass reed setup. I think the reeds need replacement. Is there a substitute for the brass, such as a carbon fiber set or do I have to find some .015 sheet to cut them from?
The motor is in pristine shape except for the corroded reeds, they do not seal at all and it blows back thru the carb when trying to start it. I can post a pic of the reeds if needed and the rest of the motor if anyone wants to see it and make suggestions..

The reeds are held in place by the insulator block when you tighten the mounting bolts. They are a T shape with no holes... This is the last part I need since I just converted this motor to EI from the original magneto ignition. The motor does run but spits alot of raw fuel out the carb at idle due to the leakage past the reeds, resulting in an unstable idle. The reed seats are of a fiber composite construction and were not affected by the corrosion. I must have left it sit too long in my cabinet without proper care for this to happen. I have had a few of these engines and they are great running engines, although not powerhouses, I had used the last one on a Nosen Citabria with great success.

Thanks for any help you can give..

John