It is a combo clutch. Not only does it have a conventional clutch with plates and fibers, it also has the centrifugal part also! Kind of a treat to deal with at times. If you had old clutch fibers in your trike and you changed the oil for a more slippery synthetic, you may have just shot yourself in the foot. Synthetics seem to not work well with old used clutches, but better with new clutches, but I don't like running the synthetic oils because of that, unless you have a more modern set of higher quality clutch fibers. The adjustment for the clutches is for the standard clutch pack, not the centrifugal clutches, so you could have any one of several problems. Try doing a "search" on 185s clutch or centrifugal clutch and start doing some reading. There are many threads on this very subject already. Also it seems that some centrifugal feet are just a tad too big for the housing and have to be sanded down to fit properly. But you will read about these things by doing a "search". Best of luck and keep us posted what you find.
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