Reliance Standard is trying to reduce my LTD benefits because of once-a-month work in the military reserve.

I have had LTD with Reliance Standard since 2006. I had to jump through all the required social security applications until I was lucky approved after 2 denials by an Admin judge. Of course they took everything that was paid by ssi and reduced their monthly payments immediately. Then I would still get at least yearly inquisitions for medical records for conditions that will not improve. During this time I fought to at least stay semi productive and stay in my military reserve unit. That one weekend a month means the world to me. I listed it an the small pay each year for this whole time now, Now! They want all these details and want to cut their check by half of what ever I get from drill pay! Plus they are thinking about going back to charge me. Help! I was holding on to one last area of feeling useful and now that is going to cost me.