hi all.i bought a 2014 tomos classic xl and during lockdown fitted an airsal 64,biturbo and a 15/15 carb.ive read alot about the oil injection system.when i removed the old piston it certainly wasnt short of oil supply.ive rebuilt the engine using copper brake pipe instead of the plastic and joined it to the pump using the shortest piece of plastic pipe with new clips.ive fitted a new pump drive nut but in my opinion the design of that is crap.ive mechaniced for over 30 years but ive never come across a system like this.ive not refitted the engine yet,my question is and you know what im going to ask is it that bad,thanks