Press harder with piece of cloth. Or by some high/er quality lead tape like 3M...
Where can I buy 3m lead tape cheap?
I havent had a problem just push firmly to the racket an it'll stick well I use the reel that TW sells
Nowhere for cheap. When you buy 3M you don't care what the price is because you want the best.
I too have added 2 layers of this stuff on a bio 300 tour with no problems.
Are you using that thick tape for golf clubs? I used that at first but it flew off pretty quickly, I then secured it with electrical tape. Worked well, but looked pretty bad.
+1buy a bio 200...