If you have an item that you know you want to build up , take the small amount of time it takes to attach it to a healing rod to give it plus-3 healing points .(use boss monsters from cave of trails 5 for the attachment,they are easy to recruit, need no training, and can combine very powerful items). Now every time you do a massive miracle attack( you know, the tri-healing kind) you get massive amounts of bonus points and levels very easily. I get 20 levels per massive attack per weapon. And the best part is that if you attach several healrods to one weapon, that weapon will be uber-like in no time......or effort.(sometimes it's almost too easy)