That is good customer service.... and good to know!
If they are SnapPads, I have had mine on for about 10 months with no issues.
When I installed mine I did two things to make sure they were on and locked in place:
1) Put Dawn dish soap around the opening of the SnapPads so they slipped over the jack pads easier.
2) My driveway is gravel so I put a piece of wood under the SnapPad before I lowered the jack to make sure it was level and had a firm base.
They went on without any issue. They locked into place and they would be tough to remove.
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