Correct..
and remember, if it's all CSMs you have every table in the place "coming off the top" within minutes of each other. Granted, pickings are not bountiful but they exist. 3rd base is best, in my opinion, because of the additional cards you see before making your playing decision. I ran a lot of sims on that and with a 6D game, S17, DAS, RSA and 5/6 dealt out I believe for the bet spread I was using, 16-1, quarter game, there was about a $2 difference between 1st and 3rd base, on the order of $88 win rate vs $86 win rate based solely on the diffence in seating. So, some difference in expectation does exist. If I find the time I'll run some sims based on the seating position for the CSM game. If it's the only game in your town and you don't want to travel then you adapt, right?
BTW..the original CSM advantage players calculated the delay in cards appearing after insertion by waiting until all 3 of one specific card were on the table in a 3 card CSM game. They then noted how long it would take for one of those cards to appear in subsequent rounds. If it's a 5 deck CSM you might have to wait a long time for all 5 cards to appear on one round on one of the tables, I would guess.