I'm looking for this selfsame manual, as well as tips, tricks, etc. to beef it up in any way. I'm considering having the engine ported and polished, but that might just be a waste of money. As it stands it will only go a bit less than 30 km/h (> 20 m/h). I wish it would go 80 km (laugh) but even 50 would be nice. Anyway, thanks in advance for any help that can be given.