put a few wraps of electrical tape around the plug wire then wrap the red wire once around that, might need to tape it in place.
Next option is to get a resistor type plug br7hs.
Don't bother calling tiny tach they will tell you the same thing. I never did get the tiny tach working well with the cdi but got it working fine with points. Odd thing is it worked just fine with my aprilia and it has the identical cdi box as my puch.