Pé

Thank you for the quick responce I will try that tomorrow and let you know how I get on.

The ISO mounts look interesting, the only difference between yours and how I have done mine is the sleave, are those available commercially.

Oh yes whilst writting the 58 pro at 5300rpm on a 24x10 pitts large silencer but on a hard surface and with buildings around, at 4M was giving out 98db, once I have the carb sorted I will take the readings again and also db the 45 mag.

Regards
Mike