Sparky, thanks for the link, I have seen that before too

I was going to try 50cc animal syringe.
the engine turning 15.5k with 9x75, my best lap was 103 secs (in the morning) while national ran mid 90s,
Greg thanks for the hemostats tips
by the way, if I use bubble-less tank, can I mount the tan kat cg (under wing) instead of behind firewall?