A question for the oil leak gasket experts

[fmugur]

This is stupid but what can I do now.
This weekend I got some time and I was able to replace the chain guides, all chains, tensioners and the two vanos.
So, the engine is on an engine stand we replaced all the gaskets as well including the upper and lower oil pans and torque everything to the specs BUT... after everything was back together (less the upper timing cases) I asked my friend who helped me out if he remember to torque the big bold that holds the chain tensioner as well since it's different than the other chain guide bolts. He said that most likely he did but because I asked he couldn't confirm 100%. It's like when you question yourself if you close the garage door after you left the house and you turn back and it was actually closed. So, most likely the bolt is torqued properly but I shouldn't take a risk. This happens because after we put back all the guides and torque them the new chain was much shorter than the old one and it couldn't go on all the sprockets so we had to take the chain guides out to be able to put the chain in place.
Now, my question to the experts is if I remove only the lower timing case and put it back will I have an oil leak? or do I have to get new gaskets and redo the hole thing again.
The way we did it in the first place it was in the proper order. We got lower timing case installed, then the upper oil pan and then the lower oil pan.