Faulty Bottom Bracket Shell

in Workshop
Hi guys
Noticed a creaking from bike, checked all usual suspects before removing the bottom bracket.
Not sure if you can tell from the picture but there is a groove running around the shell.
Just wondered if anyone had experience with something like this before and if this would be cause of said creak? The creak gets worse with more power.
I have already emailed frame manufacturer and am awaiting reply. Bike is less than a year old and has only done around 2k miles.
Any input would be appreciated.

Noticed a creaking from bike, checked all usual suspects before removing the bottom bracket.
Not sure if you can tell from the picture but there is a groove running around the shell.
Just wondered if anyone had experience with something like this before and if this would be cause of said creak? The creak gets worse with more power.
I have already emailed frame manufacturer and am awaiting reply. Bike is less than a year old and has only done around 2k miles.
Any input would be appreciated.

0
Posts
First it's used. Second I suggested the creak may not be the bb. He said he checked everything GM j said assume nothing. That's wise.
He got rid of the creak by putting ptfe tape on his left pedal thread.
Never assume.
I have a creak kn my look 795. It though it might be the bb. It's not. Its something else. Pedals, chai ring bolts, cleats take your pick. If I find 20 minutes I'll sort it out hopefully.
Never assume with bikes.
Tried a new bottom bracket and still get the creak so I'm not really sure what else it could be.
Its rideable just extremely annoying. Also don't want it to get worse, which I feel like it has.
Your BB has a threaded insert that appears to go a fair way into the shell and should be tightly bonded with little or no room for slight movement which would result in creaking.
As @cycleclinic says there is probably another source for the creaking that you haven't yet eliminated. For example you mentioned trying different pedals but have you tried swapping cleats.
Noises come from unexpected sources.
I narrowed it down to coming from the rear area. Redid the hub, rear derailleur and hanger, creaking has gone for now.
Not exactly sure which it was but went out for 4 hours this morning and all is good.
Aside from that is the groove on the shell anything to worry about in the future?