You can hone out the heel (the heel is not used as much though, if ever for some), and as for the scales... you can replace them with another set of Puma scales, or you can file down the plastic end spacer so the blade fits between the scales. Measure from pivote pin to the tip of the rounded blade, and see if it will touch the spacer pin (measure from the spacer pin to the pivote pin). If it will clear, you can take a jig or hacksaw blade and carefully file down that end spacer from between the scales (go slow so that you do not touch the scales, but only file the spacer down).

If you are not good at honing you could get someone that is to fix that heel....

Good luck and keep us posted!

C utz