Update: It's still eating pads
To me it seems that the base of the unit (where the pad velcros to) is cutting into the pad. By that I mean if you stick the pad to the unit, the slight overlap of the unit base past the velcro backing of the pad is digging into the foam. This cut is then working deeper into the pad throughout use, and seems to travel slowly under the velcro backing too. Since the pad and machine should be moving at the same rate however (they are stuck to each other), I cannot understand why this is happening i.e. where the 'cut' is coming from.
I did the roof today, and it's looking great, but the pad is ruined already! Maybe a slightly bigger pad with larger velcro attachment might help matters?
