Before you start changing anything, see how it shoots...that is the most important thing, not how it feels.
I have found that the fit from fore end to frame should not be tight, it should be a little loose. Go a head and shim or move the mount hole, but I would not make it tight fitting. When the fore end presses on the frame, it seems to shoot inconsistently. I do not like a loose fitting fore end, like you said it is sloppy feeling, not solid. I just put up with it, as long as when the barrel is in place it locks up tight. I have all wood fore ends have them all a little "sloppy". I also put a pillar in and epoxy bedded the whole fore end. I do have a dedicated fore end for each barrel.
Good Luck and Good Shooting