I thought I would share my recent experience with Monty. I sent him a 21-5 to see what he could do. Once he tore it down he called me up and we talked things over and he did his stuff. I got it back and ran it today for the 1st time and about says it all. It goes like a rocket my mbx6t likes it allot.
If any body is thinking of buying or having work done with a novarossi engine look up Monty 1st