I normally use an SB-17 to connect my EF-X20 to my X100T. But last night I was gift a pair of used PW plus, I’ve also rented a sync cable and wein HS-XL adaptor. If I hit the test button it flashes. My camera is in mechanical shutter and it is not in silent mode. I am thinking its the Frankenstein adaptor. But any help would be great thank you!