I see that new spark plugs and caps are being used on newer 912ULS engines, and others. (SI 912-027) It looks like they have gone to a dual electrodes which is not adjustable. Also, the new caps are 90 degrees instead of the lesser angle that we have on out older engines. Not sure why the change, but you might get better ignition spark from the new setup. It was not clear if the new system uses the threaded connection, or if you now use the spark lug crew cap. Looks like we can change to the new style is desired. Anyone have any more info of these?.............Tom