Bro,
1. 3-angle Valve Cut:
Powerzone did ths to mine during PnP.
2. Dynamic Engine Balancing:
Try Ozie of Auto E-Balancing, whc wil inclds the balancing of pistons, conrods, crank shaft and also flywheel clutch component.
p/s: Im not sure if contacts can be openly discuss here....check ur pm for the details of both companies.
Regards.