Extreme Burning Batch box testing RA253 MA

Hi all;
As most of you know I have 2 batch box RMHs.
A 7" in my shop and a 6" in our studio.
Both are in the extreme burning category, with back-to-back fires.
With the 6" studio dragon we light it off in the morning (7-9 am)  It gets full hard core burns all day every day until evening  (8-10 pm)
This happens from Sept-Oct thru  April and sometimes into May.
Apx one year ago I installed an RA330 stub in this stove.   After one year, although discolored, that stub is 100% as good as new!
This morning I removed it and replaced it with an RA253 MA stub.
I started offering this material about a month ago as a "Silver option" stub at https://dragontechrmh.com/
It is lower cost and has only a slightly lower max operating temperature than my "gold standard" RA330
I am sure that in an insulated home with only a few fires the RA253 will last a lifetime.
I need to know if it can survive extreme duty service.
If it can survive in my Studio dragon for the rest of this season and the start of next season then it may become the new "gold Standard" at Dragontech!

I am offering the used barely broken-in RA330 stub for sale at  https://dragontechrmh.com/

Excellent news Thomas!

The longevity of the Secondary Air Stub has been one of the Holy Grail's.  Looks like you've definitely found it.  

Hi All;
All of the last burning season and into the start of this burning season and the RA253 MA is still as good as new!
It is happily glowing orange whenever I open it up to reload.
This is an extreme burning batch.  We light it in the morning and it stays lit until sometime in the evening.

In my opinion, the RA253 MA stub is as durable as the RA330 stub, at a third less money.

Thank you for the update Thomas! I specifically avoided adding the P-tube to my BBRMH as I really didn't want something that I was going to have to replace every season. But with your posts I'm reconsidering my thoughts based on your results! I will be building a six inch DSR2 in my Bushop here very soon, and I'm going to have to add this to my system I believe.