Huge voltage drop

[houmles]

Hi,

My first thread, yay
Not because I am new but I don't need to post as I solve and teach everything myself or by reading threads by others.
Now I am little stuck and don't know how to solve my problem.

Currently my setup is AGA-T+ and Gus Telescopic V2+ and my problem is I have a huge voltage drop when fired.
Drop I measure is between 1.2-1.5V. I am using almost new Efest IMR 2250mAH 10A high drain batteries (I read somewhere they are relabelled panasonic) which are fully charged.
No matter what coil or mesh I build there is still similar drop. Now I have 0.9ohm coil from 0.8mm ribbon kanthal on hollow 500 SS mesh. It vapes ok, but without that drop it can be a lot better
I took sand paper and cleaned contacts in both aga-t and gus 510 connection, cleaned whole tube and also fire switch. Same with aga-t, I disassemble it completely and clean everything.

Unfortunately I don't have other rba now but have miniDID on way.
When I made some 1.5ohm coil and use it on Vamo I have, it's fires perfectly.

Can someone help me find what causing it and how to solve it?

(and sorry for my english, it's not my primary language)

 

[Boiler]

Bumping to find some help for you.

You might try posting in a more advanced area like:
APV Discussion

 

[houmles]

I thought I need to have 20 posts or something like that to post elsewhere then newbies forum..
So what do you recommend? Should I create a new thread there or can it be moved by someone? Thanks

 

[Boiler]

Not sure - I thought it was only 5 posts and you're free to post almost everywhere.

 

[houmles]

Ok, I created new thread in that subsection. Sorry if that breaks some rules
Thanks for help Boiler.

 

[Boiler]

I hope they can help you out, we are mostly beginners in here.