The converter will move forward but I wasn't sure how much forward would be safe before disengaging something.so you are saying if you push your converter all the way back...you have about 1/4 gap?
check one thing...move the converter back n forth and listen for a clak ..clak..noise...and the converter should spin freely...
then you will know the hub of the converter is engaged in the pump...
1/4 is fine...it will move forward when you tighten the bolts