CTD Clutch M/S replacement

Today, twice, when I have the clutch petal to the floor and stop the truck, there doesn't seem to be an issue till I take the foot off the brake to move
it over to the go pedal and I'm already moving. The clutch is not totally disengaged. It also feels a bit like a leaky master or slave, not sure which as neither is giving an outward clue.
I'm going to change out the clutch master/slave duo. The original lasted 145k miles on my '03 HO and wouldn't mind replacing it with stock, but the one dealer I called said it would take up to 3 days for the part to come in. This was after I told him I had to be on the road to Topeka Wednesday afternoon.
So, I'll call other dealers looking for an in-stock part. I want the duo cause it doesn't need to be bled and I don't have to guess what part was bad, master or slave.
I see South Bend has an upgraded one, and I'll call them tomorrow, and Valaire also has one.
Anybody here done this 30 min job and have a preference? I put on about 25-30k a year and pull the 25' 5th about 3k a year except when I pulled it coast to coast to coast and when I drove it to Alaska. Both were 10k miles of pulling.
Oh, and when in gear, and at WOT, there is absolutely NO noticible slippage on the original clutch .
FMB (North Mexico)
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
Add image file

Motorsforum.com is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here. All logos and trade names are the property of their respective owners.