Welcome Kenaidog,
Making your own spinners is a great pass time, not to mention very rewarding catching fish on spinners you made yourself. I like heavier blades too, they seem to spin a little slower, resonate more, provide more flash since the blade hangs further away from the body. You can change your retrieve to make the blade dance/flutter to help extratct a bite better with heavier blades. There might only be marginal difference, but heavier blades pull through faster water better then thin light blades. They just stay down longer with greater flash. That's my opinion.
BC Angling post should be able to set you up in the Portland area. Since I live further south, I purchase my spinner componets from GI Joes or Fisherman's Shack which also has a web page.
Fisherman's Shack
good luck,
Gregg