2013 ktm 690 refused to start (starter couldn’t turn engine to/past TDC) so I’ve spent the evening in the garage.... Electricals are fine & so I suspected the autodecompression. The autodecompresion itself mechanism wasn’t seized, but in measuring valve clearances, both valves on the exhaust side are at about 0.8mm (yes, 0.8, not 0.08). I think with the exhaust valves that far out of spec, the autodecompressor cant actuate them. After searching on here it seems that rocker arms/bearings fail on these bikes & I’m guessing that’s what I’m looking at.... Question is - how do I check if it’s the rocker arm/bearing that’s shot, and not something else? Should there be some free play somewhere that I can look at to diagnose? Thanks in advance!