electra 09 asa a bit loose

[iceman2009]

at the bottom of the trigger frame the Asa slides onto a rail and when i have my tank screwed in it wiggles and i was wondering if there is a way 2 make it stop wiggling.when i was cleaning my marker it seams better with the macro line with less slack but i dont see a way to hold it in place. hope my message came across any ideas would be nice

[iceman2009]

oops im really blind another post about this thought i looked thorough enuff