If the engine is running smooth and revving to the cut-out then I would leave well alone.
I've had exactly the same niggling feeling since changing the cam belt myself. You'll be shocked to hear that I didn't use cam locks or any special tools
There is mark on the crank pulley for TDC and there are marks on the rear of the cams. I established TDC by poking a stick down No1 plug hole and watching the rise and fall.
Removal of the crank pulley is not easy - there's no room for long bars and there's no room to swing a hammer. I ended up using a pneumatic impact wrench to loosen the nut.
To get the timing covers off the power steering reservoir has to be drained and removed and one of the pipes onto the pump need to be disconnected
To loosed and tighten the nut on the cam pulleys you need a special tool to prevent pulley rotation - the pulley to cam joint is indeed a taper and separation is difficult.
When I did my belt I set up the engine at TDC and marked the cam positions. When I put on the new belt I found that the cams were ever so very slightly out of alignment. The RH exhaust cam was perhaps 1/4 tooth out he others not so much. however because of the cam/pulley taper joint etc I carried on.
After 5000 miles the niggles got the better of me and I borrowed cam locks, TDC indicator and pulley anti-torque tool and set about correcting the cam errors.
I was somewhat nonplussed to find that to use the anti-torque tool and to separate the pulley on the RH exhaust cam the engine needs to be lifted clear of the engine bay
After much deliberation I decided to give up and live with the errors.
Obviously it's psychological but I think the engine is running better since