Hi Fuji Fans. Monday I used my FF350 mainly as a fill in flash cos of the bright sun. I had put in a pair of good quality Alkaline batteries, after a number(200+) of flashes I was not flashing every time, did observe a brief display of word LOW - that's simple. When I got home I measured the voltage of the batteries and was surprised 1.55V that is hi for a LOW indicator. I did switch to TTL 1/128s and was able to get more shots. Odd, maybe over the following weeks/months other members with multi-meters might wont to check the battery voltage when changing them.
PS XIT-f due next week from China I wont to try it with the EF-42 as a slave.