Filter Swap. Where did I go wrong?

Replacing the AirDog filter on my AirDog 150 with a Cat 1R0751. After easily spinning the filter on by hand, I saw that I was going to have to repostion the bracket to get it to fit. When I went to remove it, it wouldn't budge. I eventually spun the pickup tube out of the pump base. After trying a few things, I still can't get the pickup tube out of the Cat filter. I also tore the threads up so there will be no shot at reusing it even if I do get it out. Where did I go wrong with this install? Truck is a 2009 6.4L Power Stroke. Can I just buy the pickup tube?

Bought the pickup tube from AirDog for a $1.50. Lube those threads!

Holy Moly! Did the new piece thread into the Motor assembly ok?

It seems that the CAT filters are prone to gauling up the filter base threads.

I've had it happen 2 times on the 1R 0750's with Fleetgaurd bases. I think its because both the CAT filters and the bases are aluminum and they dont play nice together.

I over to changed to Donaldson filters which have steel internals and havent had any problems since.

Is it stainless on stainless?