Chain guide for a 48T chain ring, max i can find will only fit a 42T

I have a 2014 Specialized crosstrail expert that i have converted to a 1x10 and using my front mech as a makeshift chain guide while i find a replacement (If i ever do!).

Specs needed for chain guide:

  • If using seat post mounted chain guide it must extend more then 35mm from the seat post to give me enough adjustment.
  • If using bottom bracket mounted chain guide it must adjust up high enough for a 48T chain ring.

Is there anyone using a chin guide or know of a chain guide that will meet these specs?

Appreciate any help guys