A. Lange & Söhne

I like the lange strap, the thickness and the curve on the end. I want to order an OEM strap , is the only way go to boutique? I looked hoping I could order online, they just had boutique phone. Honestly easiest would be an email contact or buy on website... 

Square padding and rounded tip. And I am pretty sure they have been the mfg for Lange in the past ...  

The button pusher PC amazing. That is a similar look I'm going for. Did you know how much padding thickness is OEM? I see 3.5-6mm in CF configurator.

strap will be too stiff to be comfortable.

I prefer padding that's thicker (maybe 3.8mm) near the watch head and gets thinner as you go down the strap towards the tail. That's functionally easier, too, if you use a tang buckle because you'll be bending the strap. It won't matter as much if you use... 

Same taper, padding etc. Exact to Lange spec. And they do make straps for Lange (customers order custom via Lange and JR make them) as far as I know.

Their sit was little weak, at least on my phone. Do you know how much padding they use?

JR makes great Lange straps. Best experience is if you visit their NYC boutique twice -- first to pick your skin (by the window, in natural lighting) and get measured, and second to pick up the strap and have them punch the holes in it (if you trust them ...  

And that tourbillon is grail type piece. Tops Thanks, Kevin

Which they often do.

Some former ADs may have some stock left over, but less likely.