Can you take a photo of the positive springs on your FT03?
That is possible, also possible the button top is higher resistance and is causing the issue (would not be the first time).
Also, are you compressing the springs down?
One phosphor bronze spring handling the full grunt of an SST-40 at 8A may make the spring very hot.
I just tried running my FT03 for 30sec on turbo(momentary mode) and immediately checked the springs. The body heated up decently, but the springs didn’t even seemed warm to the touch. I ran the light with a brand new Samsung INR21700-40T.
Photos of the springs on my unit
The spring getting hot has to do with high resistance. It might not be making good contact. Try cleaning the end of the spring. Maybe the button top is only touching the spring in one tiny spot instead of across the top coil. Is the end of the spring coil pointed up, or bent down a little? Maybe the bigger spring is not compressing down enough to contact the second spring.
so its bad if the springs dont get hot or ?
No, it’s good if the springs stay cool/warm. If the spring gets hot, like really hot, it’s because of too much resistance. Resistance creates heat. Light bulb filaments have a lot of resistance which is why they get so hot they glow.
Depending on the amount of current flowing, most single, steel battery springs will get warm. The extra resistance they have will reduce the current which reduces brightness.
When you add a bypass wire, add a second spring or switch to BeCu springs the resistance decreases and the spring temperature under load will be less. The current flow increases and FET powered lights get brighter.
It’s okay if a spring gets warm or hot, but if a driver spring is really hot and the tail spring is cool, that’s a sign of something not right.
okay gotcha good to know. 
Please, coupon for this!
Freeme, is code for the $29.99 price still available?
Thanks!
Sent. [quote=kurocato] Freeme, is code for the $29.99 price still available? Thanks! [/quote]
Thanks man! i just order one. 
Mine arrived today! :+1:
Freeme, is code for the $29.99 price still available?
Thank you!!
Looks like I’m quite late to the party but out of curiosity, is that 29.99 code still available?
Sent.
Thank you. Although I don’t think I will end up using the PM code after all.
After I posted my message I came across the FT03+26650 combo offer on 1thedeals and since BG is running a promo on just the FT03 I ended up ordering the combo instead.
Code for this, please.
Need this!! Please send code.
can the rubber covers of the charging port be somewhere? my cover broke when opening the charging port