i was trying to put a new kmc chain on my mercier kilo tt and basically... either i leave these 2 links on and theres way too much slack... or i take the 2 links off and the chain is just barely too short... and i cant take just 1 off because then the master link doesnt work on one of the sides... because one end of the chain would be male and one end of the chain would be female... do i need like a chain tensioner or something to pull it tight enough to put on the chain with those 2 links off?