Adco cover for 3124ks

My frustration is high. I have researched this site and found some discussion about ADCO covers, but no specifics I can use. Does anyone know what model # ADCO cover I should order for a 2006, 3124KS? It just seems to me after many years there should be one specific ADCO model that fits each Trailmanor model. I know this is not rocket science, but why do I have to measure? Because of an air conditioner and bumper? Are not all 2006 3124KS' all the same? The frustration is also caused because I have yet to speak to anyone on the Camping World 800 number who knows what a Trailmanor is. For ADCO cover purposes is a Trailmanor a popup or not? I know no one wants to call a Trailmanor a popup, but when I am speaking with someone who apparently has never entered an RV, it is difficult to get information I feel comfortable with. ADCO says I can order a custom SunBrella, Camping World says I cannot. Camping world says I can order a AquaShed for a popup, but I cannot order a Tyvek. Why is it so hard to order a cover? What am I missing here?

Jack
Southern Middle TN
3124 KS
2007 GMC Yukon