Flight model requires serious tweaking

Currently, landing the Alabeo C-170B is like throwing a lump of dough onto a kitchen countertop.  There's a thump, and it sticks!  Totally forgiving, and nothing like any real-world tail-dragger that I've ever flown (which admittedly doesn't include the C-170B).

Also, in replay mode, I get a weird background noise of thumping and squealing, as if a tape of landing noises is playing in the background.  No idea if this is unique to my installation.