i want to start balancing my blades to save spindle wear i bought one of those $5 plastic balancers from the hardwear store.. its not easy to use, and i dont much trust it. it has to be on a completely level surface. ive seen the wall mount ones for sale.. do they actually mount to the wall so that the blade is put on it perpendicular to the ground? thats what it looks like. example: http://www.powerequipmentwarehouse.com/bladebalancer-p-16477.html has anyone used both the cheap ones and a decent one like this? would one like the one above be alot easier to read/use than a cheap plastic one, or is it the same pretty much but just higher quality? also, do these wall mount ones need to be on a completely level surface? how does that work if its wall mount?