Yeah, my post sounds really crotchity, doesn't it?
OP is wondering why only I have been giving consistent responses. I say it's because there is no need to pile on any more info, OP just needs to use his legs more.
Tough advice to figure, that. Use legs more means what? Should he collapse like DerekJeter? Should he bend and then spring into a 12" high jump UP into the ball?
You decide, and post to him what you think.
Most of us know what this serve needs.