Such a long thread lots of input I wanted to add my vids proof of what I was getting out of the original stock versions. I own three
of them and find them to be clean running no fuss engines. I use an elect. starter and plenty of nitro, no need to hand flip these
with light weight props. These are the smallest displacements that have that traditional look of larger engines with a very nice
mini muffler keeps the noise down quite nicely. I may need to check the timing might try a tuned pipe with one just to see.
The TT GP .10 has 160 deg. the .07 may as well and if so would certainly benefit from the pipe use / cool factor / sound and
goo control.