Try this for a work bench to hold your gun:
https://www.philipmorrisdirect.co.uk...582466738aeb5d
And try these for setting up your scope, I got 10 of a similar spec and measured them all against each other and an iPhone's in built spirit level, then I kept 6 which were all agreeing, and binned the others as they were out - it's worth it at this price
https://www.amazon.co.uk/Picture-Han...y%2C44&sr=1-12
You can always find a small flat bit to get your scope levelled, even on a 97