First, nice job on the repair.
Second, why don't you find a good used oil cooler, either at a salvage yard or from somebody here on the forum. There is just too much riding on the integrity of the oil system to rely on 2 threads!
Please don't take this as a criticism, just an opinion.

__________________
Jimmy L.
'05 Acura TL 6MT
2001 ML430 My Spare

Gone:
'95 E300 188K "Batmobile" Texas Unfriendly Black
'85 300TD 235K "The Wagon" Texas Friendly White
'80 240D 154K "China" Scar engine installed
'81 300TD 240K "Smash"
'80 240D 230K "The Squash"
'81 240D 293K"Scar" Rear ended harder than Elton John