timming chain help

[DAT240Z73@aol.com]

hello list,
 today i took the head off my 69 2000 to replace the leaky  head gasket,( 
leaked oil on the passenger side  right next to the #4 cylinder) got the head 
back in place went to put the tinning  sprocket back on the cam, if off just 
a little keeping the two bolts from getting started. i have not installed the 
tensional yet thought if would put too much tension on the chain, am I doing 
this right?