Working on a High Standard semi-auto .22, tube fed. Anyone know the trick to remove the trigger assembly? This model forend has two "ears" that extend over the receiver with a bolt through and through. Took out the bolt and looks like the TG should slide down and out, leaving the bolt in the receiver. The rear section slides down a bit but something is holding the front of the assembly. I've tried all combinations of safety and trigger positions I can think of but no dice.