Ya you never get anything like that on the BUS in JFK.
What I have found (BUS) also is that if you typically start RSV block with at least 4 days on Mondays and Tuesday you have a higher percentage of LCR LCR SCL SCL...
Some guys will say you can also score a REL on the last day like ending on Monday or Tuesday. However we all know in JFK that we only get used on our last days so once again that's a 190 thing.
In my bidding I try and group my RSV days in a group of 5, but that's just me.
Oh and don't ever use PTO in your first year for RSV days. Get that 100hrs saved up.