I just put in an order for a Lelya with the intention of shooting it in the backyard. It has a moderator installed already, but I'd like to make it as quiet as I can. I see that EDgun produces a Bat moderator, so that's one option. I also came across (and lost the link to) 3D printed inserts. Given the off-center shroud configuration of the Lelya, are these my only options?