I would suggest looking at sites selling BLK but oriented to air-rifles, and look for riser blocks. I would also look at the RWS or Beeman mount designed to adjust for air-rifle barrel "droop". These mounts allow you to adjust the vertical angle of the scope, as well as some horizontal adjustment. Cost is about $55. They add height by their design. My Beeman mount of this design measures sust uner one inch from the top of the action to the bottom of the scope. Those combined with riser blocks might get you where you want. Downside would be weight and the "ugly" --make that funky-- factor.