I just got an Ets 150/5 not that long ago and picked up the interface pas for it. i am having trouble with it sticking to the pad. even with pad savers that are new and super sticky i am just having trouble with the interface pad sticking to anything. Is this common? I need a new one but might give a super soft pad a try if this is common. Are there any trice to revitalize the velcro?