Sam, the ONLY wad that will work with 3/4, 20 gauge loads that don't require adjustments to your loader are the Winchester factory 20 gauge wads. Unfortunately they are more expensive but you can use these wads without making any crimp adjustment. You will probably still have a very slight dish but it is of no consequence. Other wads as you have found out will have a deep dish. and can be used only if you are willing to make adjustments to your loader. Sometimes even that doesn't work. Adding fillers is a PIA at best. If you compare the Winchester wad to any other you will see why they work as the shot column sits higher. Use the same powder drop as you use for 7/8 oz loads and you should end up with a very satisfactory load. Good luck. I've been using 3/4 oz 20 gauge loads for about a year or so and have gotten very good results with them.