Headgaskets Aluminum Heads

I used 1008 on my Speedmasters and no leaks for the first 5-6 heat cycles then I started to get a very slight weep of coolant between the head and block. I looked all over for re-torque information and it was quite hit and miss. Some say no and other say yes after several heat cycles go back and re-torque. I re-torqued and found a few head bolts had backed off or something relaxed. Have not ran the engine since but the weeping stopped. Block was square decked. Never had this issue with Iron heads. Just food for thought.