How to Troubleshoot & Replace Frigidaire AP4339026 / 134844410 Selector Knob

I took the model number and brand, called APP.com, ordered the part - which came quickly as promised - unpacked the dial and placed it on the dryer. It is working just fine. Thank you for such quick service. 

Replaced it with parts from appliance parts pros. 

Found a new replacement knob on AppliancePartsPros, ordered it, and installed it within a minute. 

Pushed the replacement knobs that you sent me onto the appliance. 

We found the part on your website, ordered it, and it was delivered within 4 business days. The knob fits perfectly. 

With the knobs 

Ordered the new part and just matched the shape of the cut out on knob to the turn thing on the machine I've never fixed anything and I fixed this. super easy 

Just looked up my make and model of dryer and ordered the exact part from Appliance PartsPros, They had a match and it came in just of few days and just pushed it in place and perfection. I tried super glue, didn't work, then I used pliers but that didn't look good. Perfect match and fix done in a minute. 

I bought a knob. It worked. The end. 

You know it was dazzlingly simple. I bought the selector knob off of appliancepartpros.com and when it came in the mail two days later I opened up the package, lined up the knob to fit the metal insert and voila! the heavy-duty Gallery model Frigidaire was running