Is there a replacement line head for this model? I do not like the stupid oregon speed load cartridge system. I am now limited to buying only oregon line in tiny spools. I would much rather have the option of loading line of my choice onto a spool. The oregon line consistantly breaks... i used two spools to trim edges of my front yard. My previous trimmer was a cheap piece of junk. With less power and no quck change rubbish it performed better. The victa seems strong but the bump feed quick change head is a real let down. Im considering taking a hammer to it for this reason alone. Advice on a replacement head please?