FD v3 arrived, I opened the Waidea VF (not the first time and also not the last I think) for a closer look and to put that spring-loaded 510 connection in it.
First thing I discovered was a bad solder on the pcb GRND connection, solved that one first, I didn't remove the crimp-hose so I hope there aren't more bad solders on the pcb's and wires like that one.
I cut the loop of the ground wire and cut the positive wire just below the fixed 510, stripped them a little and solder the copper ground solder tap and the 510 pin positive.
Checking if all will fit before assembling , there is a space above in the sled where the ground solder tap will fit.
Screwing the bottom retainer on the delrin can be a pain in the ..., almost no space and you must get it right first time because the fragile
thread is damaged before you know, be careful with that.
After assuring everything fits, with no damaged wires etc. you can put the sled back without force.
And ready to hit again
First time when I put it together and turning a atty on it I saw a very little scratch on the top-plate, the 510 was a minimal below the the plate.
So I had to remove the 510 again and put a small washer .4 (better a thinner one but at that moment I could not find any) under it, now atty's won't touch the plate but it,s not completely flush anymore, I will use a thinner washer next time.
Now it look like this and I am pretty happy with the result.
I will open the flask again when I find a simple reliable solution for the chassis ground issue, still searching for better top-screws also.
Just a impression from what I did, It's not a easy thing to do and if you are planning this upgrade be sure you got the skills and tools for the job.
BTW the Ohm reading is stable with the FD v3.
