Thanks for the reply, in this particular case I am looking to access either the 10.10.10.1 or 10.10.100.1 router IP on these vlans. The FXP connection will not be available when this is finally set up. I am also happy to set up an ST0 connection to get access to the SRX devices.
I did try setting the protected to 192.168.54.0/24 as a sanity check and it didn't fix the issue regardless sadly.