No base modules for kernel-longterm

Hi - I've been playing with MicroOS and plan to use it as a base for my home servers. I've installed kernel-longterm and k3s. Then I wanted to add longhorn, so I installed the pre-requisites and ran the environment_check.sh script which threw an error regarding a missing kernel module iscsi_tcp. Modprobe returned an error that the module could not be found. Checking the available kernel packages I saw that for kernel-default there is kernel-default-base which holds base modules. After installing it I was able to load the module but the OS also booted into 6.11.5-1-default instead of 6.6.58-1-longterm. I wonder why the base modules don't exist for kernel-longterm or what's the suggested way of adding them. Thanks in advance!