Sounds like a Saito 62 four stroke would be more appropriate ? I know one person said they were using a 56 four stroke and were fairly happy. Another gent was using a Webber 40 two stroke (nice old engine) and stated it really was under powered. I was using the old take the 2 stroke size and multiply it by 1.5 to come up with a 4 stroke equivalent. a 62 is probably closer to a .35 2 stroke so I went up one size. I will have to check weights now but I was guessing they are lighter than the one days gone past.

(I haven't bought anything yet so I have time to bounce things around. )