Yep - the originals do fit very well because they lack the "studs" that keep the seat a "bit" above the framework - which Corbin touts in their catalogue as the best possible way to protect the seat from excessive wear and tear. They might be right on that - only problem is they shoot those studs in from the hip so to speak and the height is not rightly adjusted at all for all Softails like apparently (that could be the reason whay they are way off on a springer and perhaps fitting pretty well on a Heritage) . My dealer isn't going to help me either apparently as he is not willing to react to Corbin on my behalf ..sad world isn't it ?
I could (and should) take it to the next level and escalate this but I'm not having much spare time and am on the road jobwise too often to even contemplate further concrete steps other than a planned call to Corbin importer here in EU . Could take the Hollywood to a seat maker and have it fitting but that would mean a reconstruction of the baseplate - which I suspect is more expensive than buying a HD original seat ad have it overhauled with memory foam /Gel and real nice leather ...
BTW there is a solo seat from the MoCo as per underneath :
- Diamond Back® Seat for Softail® Models
This Softail® Diamond Back® Seat fits with the same great Diamond Back® seat styling. Fits with current Softail® Diamond Back® Tail Sections and Diamond Back® Pillion P/N 52069-98 (sold separately). Seat width 13.8".
52629-00
Fits all '00-'05 FXST, FXSTB, FXSTS, FLSTC and '00-'06 FLSTF (excpet '06 FLSTFSE2) models.
^^^^^^^
<typo is TM from MoCo so i don't dear to change it

Hasta Luego
Rik