Think i found the souce of my knocking
Dont know if it is the big or little end of the no1 cyl.
When putting pressure on the front cyl with my hand and turning over the engine, it has about 10mm of jump or play.
good news is engine is enroute.
anyone have a 2.5TD 2.5 NA or 200tdi crank shaft? ill prob need it when i rebuild this one.