I went to one of local indy MB shops this afternoon with a box of donuts and some ice coffees
and talked to mechanics about what i'm trying to do with mine and problem i'm having with... they recommended to proceed with removing the head for now and worry about timing later as they suspected something wasn't right as I explained that i couldn't rotate the engine manually.
They were very helpful and lend me a head guide pin removal tool for free and gave me procedures for removing the head and even printed a copy of manual with torque specs for each bolt.
I just removed the head and i noticed that several valves from either cylinder #2&3 or #4&5 were sticking out of...
I'm going to take the head to machine shop for inspection.