e30 '90 325i cooling gasket - cork vs.? /glove box/heater resistor

things do come in threes.
First off, have a bad coolant leak that happened this weekend. The small gasket that connects the hoses to the throttle body housing
failed. Has anyone successfully tried a material other than cork for this replacement part?
2 Lock on the glove box broke and it's stuck shut. Have a Chilton's book, but it's useless for these types of repairs. How to remove the bottom part of the box to get the lock mechanism out?
3 Heater fan resistors failed, so I either have no fan or setting 4. Anybody know where the resistors are located in the car? It's US drive with A/C.
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