Was that the T50 bolt , lower left hand side?
Just took that out yesterday, I had to order a new bit as mine had an 8mm hex shaft (to get a spanner on) which was too weak so I ordered one with a 10mm shaft meaning I could use a slightly beefier spanner (well 2 as I used the other for leverage.)
Took a week to arrive but did the job
Gearbox (Transmission) out last night , now need to make the tools for locking the cams so I can get the flywheel out and dig into the IMS bearing.
Im steering (blindly) towards this bearing..Vertex Eternal, I like the idea of cylinders versus the low contact surface of a ball.