Here is an example (as attached). The cup I have is on the right. The cup I need is on the left. Is it possible to get those? If so where from? Would they work on stock outputs?

I understand what you saying. You want something like the stocksliders. The rd logics take the stock grub screw pin combo. I find the ue cvds have better and bigger grub screws and seem to hold alot better than the others. My ue cups don't seem to come lose.

Ur tired of teh 7xl? I might be interested in it. I got a nemsisi blue 9L motor that i might trade if you want. I gotta test it out first, but i rather have a 7xl, cuz it wont heat up as fast under race conditions.

What drive cups are you using, Nick? I haven't had any troubles with the UE or MIP drive cups, which both use large set screws. I also have Tsais drive cups here, which take the stock pin.

I use MIP.

How much are the Tsais cups?

Rdlogics take stocker pins too? I think that would be my best alternative.

Never had problems with MIP either. Their setscrews work just fine, but when I have the opporunity, I swap the setscrews with some selfmade ones. I just take long setscrews and make them pointy on a lathe. Never did this in quite a while, though.
I have MIP cups in the centerline of my most used truck, un-modified, and never had a problem there.
Nick, just make sure you tighten the set screw on the flat surface of the output shaft.

I find that loctite and tightening the screws down good works great. I turn one in until it starts tought the shaft. Tighten the other side up tight then tighten the first side up tight. It puts more even pressure on the cup. Just a suggestion. Hope this helps you out nick.

Red or blue loctite?

This also asks me, whats the difference between the two? Or is there no noticable difference and is just colour preference? :p

Red is to stay, blue is to be removed. I think, Nick, that your output shafts on the diffgears may be damaged. this could be a reason for them to come loose every time.

I use a hex key with a 6" long lever and cranck them all the way down..

Ok, thanks for clarifying that for me.:)

So I'm guessing I should use blue, if I ever want to see the CVDs apart again? :)

yes, definately use blue. if you use red chances are you will strip the little set screw before you brake it loose.

Just grind 2 small flat erea's down on the shaft where the set screw "set's". Should be fine, no need for a pin that goes thru.