I am just getting back into setting all my reloading equipment up after being to busy with building a business and moving into a new house.  Everything has been setting for about 7 years!! 

I used to use the case trimmer on a separate RCBS single stage press and tonight I was setting everything up to do it on my 650 press.  The problem is once I get the trim die set to the correct position, there is not enough room to put a lock nut on top of the die.  I tried the nut on the bottom side and it works but is this OK?  I bought the trimmer when they first came out so have the dies changed at all to make it fit in the 650 toolhead?