How do I navigate the Khon Kaen Immigration Office for TM 28 and TM 30 tasks?

I went today to Khon Kean Immigration Office. Moved to a small village in their area so up to do my TM 28 change address and TM30 with the misses because I stay in her house. A long search, nice signs on the road Immigration Office 1.5 KM. After 3 KM U turn and yes again the same sign but no Immigration Office to find. Ask the postman, he explain You enter the compound of the Royal Thai Police Training Center Region 4 and in one of the buildings is Immigration. Nice if you know. Found it, outside is a Immigration staff with copy machine, explain her what we like, she gives the correct form, big tables to fill in, she checks and send you inside the office, directly our turn and all went smooth. Within 15 minutes done and dusted, very friendly staff. She told me I can do 90 day reports online, but the system is not so good, so maybe better if I just visit them. Yeah 120 KM on the motorbike one way, I go for the internet option.