the tensioners got new O-Rings and washers, and re installed.
for the IMS chain tensioner, i found it more easy if you push it with a screwdriver and then tighten it by hand.
i then removed the locking tools (camshaft and pulley) and turned the engine couple of times to make sure both camshafts return to the same position at TDC.
once it was confirmed, i installed new cam plugs.
the whole process took me 40-45 minutes to complete.
not bad at all.