hi, need some help , i have the timing cover off on my 2H and the injector pump waiting to go in , i need to line up all the numbered gears , i have been told to just keep turning them and they will eventually all line up , at the moment i have the crank at TDC and No 2 idler matched with the cam , can i remove the No 1 idler and replace it matching the crank and No 2 idler cheers