i havent actually had it running yet. its at my lhs being set up cos i had a number of problems with it (not just the engine). there seemed to be too much pressure in the engine but it still started, it didnt stay started long (i think it was too rich) and my failsafe kept cutting in on fresh batteries. i could have probably fixed it all myself but i wanted to make sure it was all ok cos it was a new buggy. the engine seems ok when it was running. seemed very meaty