thats a bad sander to be using for all that sanding get somthing like this and some sheets of 40 grit and save 80% of your time,
http://www.amazon.com/Bosch-1295DVSK-5-Inch-Variable-Canister/dp/B0000614V4/ref=sr_1_1/103-7623793-1430245?ie=UTF8&s=hi&qid=1190159568&sr=1-1
http://www.amazon.com/Bosch-1295DVSK-5-Inch-Variable-Canister/dp/B0000614V4/ref=sr_1_1/103-7623793-1430245?ie=UTF8&s=hi&qid=1190159568&sr=1-1
