Turned off the power. Removed the screws holding the built-in oven to the wall. Slid out the oven. removed the four screws that were holding the inner oven walls to the outer oven walls. Slid the inner oven wall out 1/4", removed old gasket material and replaced with new gasket. Slid the inner oven in tight and replaced the screws.
Just pushed the new timer knobs onto the stem. They fit and now I can set the oven timer without having to use a pair of pliers to grip the stem and turn it.
Two of the knobs fit perfectly.
The stem for the the clock was broken off and there was not enough of the stem left for the new knob to fit.
Gasket sent did not match the profile of the original. Only after trimming off two long edges of the gasket did it come close to matching the original. I would not recommend using this replacement gasket for this oven model. 1-Remove door. 2-Loosen the 2 oven box attachment nuts on the back of the oven. (loosen only, about 3/8") 3-slide the oven box toward the front of the oven. 4-remove old gasket, and insert new. 5-Retighten 2 oven box attachment nuts. 6-Reinstall door. Took especially long because of incorrect gasket. Deep well socket required to loosen oven box attachment nuts. Recommend two people to do, one in back, for attachment nut and one in front to keep gasket in place while tightning nuts.