I just bought a new Ural patrol. I wanted to go over all th items on the PDI my self. found. valve adjustment incorrect ( if done at all). lots of loose items, idle too low, etc. My question is-with a timing light at idle it shows the timing flash between the BTDC and TDC marks. I would thing it should be on the mark with the BTDC. I marked the housing before rotating, but unable to get the BTDC in the middle.Whats up? or is this correct @ 2 deg. BTDC ?.