I purchased my first MT product (RB751U-2HnD), so I’m new to routeros but not basic networking.
Before posting, I have read the wiki, manual, and every example I could find.
My setup (may not be a smart one): I have basically replaced eth1 with wlan1 in station mode

I do have multiple wired clients in each LAN but did not add them to the picture.
With current equipment, I can not use WDS.
If I understand correctly, I can not add wlan1 in station mode to a bridge.
For these two reasons, I have arrived at this configuration.
Now, the issue, LAN2 clients can reach all LAN1 clients and internet but LAN1 clients can only ping router2 @ 192.168.88.1
However, LAN1 clients can reach services (web servers) on LAN2 clients.
Also, if there is no traffic across the wireless link for a few minutes I lose the ability to reach LAN2 client services from LAN1.
I have obviously overlooked/missed something somewhere in my reading and could use some advice.
No firewall filters currently and only one nat rule (wlan1-out masq)
If I have left out some needed info please let me know.