ORIGINAL: Richard39

In my continuing search for the lack of rpm/power in my Saito 91 I took the main needle out and was blowing air through all of the lines both at the carburator and the muffler... I noticed that the needle was not sharp on the end... sort of blunt... I pulled a needle valve out of my Saito 100 and they appeared to be the same exact needle except the needle in the 91 was about 1/64 inch or less shorter... and not a sharp point... It was blunt! Tomorrow I will test run this engine again but this time with the needle from the Saito 100... Hopefully I have found the problem... What do you think? Thanks... Richard