thanks for the input. i haven't tried your steps yet. today, though, i took it apart and had all the pieces disassembled. there is the chain oil tank, a 2" piece of clear poly tubing that leads to a mechanism that has a spring loaded head on it (presumably it depresses to open up when the throttle is engaged). then, another poly tube leading to a black rubber mechanism that lets the oil flow out to the bar (sorry, no pics).
i cleaned everything (rags, skinny nails, blowing it out with my mouth) and everything indicated it would flow fine. loaded it back up with lube and i'm not sure if it clogged again or what, but it's not working yet.
saw this video (which is an update from an earlier one he produced) and am tempted to try it.
do you know if instead of brake cleaner i could use something like acetone or white gas? my chain oil tank is polypropylene. will i burn through it?
lastly, on my old chain, i was definitely smoking it. not sure how bad it's burned. do you know if i can sharpen it and continue to use?