i have been messing with this sled here and there trying to get it back to a running and driving state. after tearing its engine all down and going thru it all i got it back together in the sled and carbs ready to go. i go it running but the mag side isn't getting spark. it seems to intermittently once its running if you can get it to stay on. but i don't really want to run it like that as i am sure its washing down the cylinder. is there any options available to upgrade the ignition. it has the original polar fire on it. i read a bunch on this a year ago when i started the project but can't find any of that info. thanks!!