I'd suggest you have the scope mounted too far forward.
I have a Hawke 50mm AO scope (which has pretty much the same dimensions as your scope) on my TX200HC and the end of the scope is inline with the first bear trap notch. That leaves plenty of room to load pellets even with gloves.
The bottom of the AO end is 6mm above the mounting rails. Mounts are Hawke Sports (ie cheap, like the scope) so nothing special.
Hope that helps.