Hi, curious if anyone has experience with Permobil aftermarket backrests, particularly deep/contoured models? I?ve already demo?d the Roho Agility Deep, and it didn?t fit me well. The positive was that it fits directly on the existing hardware. Curious of the other options (Jay 3, Matrx, Varilite). I understand these would require the special mounting bracket. By doing so, does it impact seat depth?
Thank you for any feedback.