I have the EXACT same problem with my Meister R!!
I have been on the phone a number of times with Jared, the owner of the company. He has been super nice and helpful, but I still have this issue. Mine is only present at very low speeds, 1st and 2nd gear only...no noise at all once I get up to speed. He said that if the dampers were bad, you would hear noise at all speeds. I have checked all other suspension components and installed the powerflex motor mount inserts so it's prolly not your mounts. (PS-I HIGHLY recommend doing the inserts on both sides plus RMM of course!!) I also put the stock suspension back in on the driver side and the noise went away, so I am 98% sure it has to do with the coilovers. He did suggest that I could take both coilovers off the car and swap the damper from the driver side to the passenger side to see if the noise moves, but that is a lot of work!! I also took the drivers side out, lubed, retightened top nut (which is the first thing you should double check), checked all bolts, retaining rings, etc but this did not help. For now, I am just living with it as for me it is not bad at all, but I can def hear and know exactly what you are talking about. I will prolly just buy a whole new driver side coilover in the near future...I'll let you know when I do and if this takes care of the problem. How bad is yours? Make sure to check the top nut on the coilover as Jared said that is usually the culprit. There are some vids on youtube that explain this. Like I said, mine is pretty quiet and I can only hear it at very low parking lot speeds...but kind of annoying for sure!