valve tick and a squeek on new l31 heads

[twich3136]

so i just got this thing assembled
010 block
kb pistons
cant remember the cam but 440/420 lift
l31 vortec heads .475 max lift from jegs
lunati 1.5 roller rockers
edelbrock performer rpm vortec intake
1405 carb
ram horn headers
machine shop set up .004 quench
timing is spot on with a stock engine
high flow oil pump

so while my brother was breaking in the cam ( 2000 rpm for 20 minutes is what the shop told us to do) a random tick started happening. shut it down and pulled the covers, rotating by hand could not notice any of the valves behaving badly. started it up without the covers and could not notice and sticking valves. then a squeek sound happened. shut the engine off and now its time to figure out whats going on.
my brother is going to do a compression test after work in the morning to narrow down the cylinder in question. we think its the passenger side only. and this tick only happens at higher rpm. idle is spot on with no weird noises and smooth as can be.
some things that i think might be the problem
-we didnt soak the lifters and its an injured lifter
-timing is slightly off and the valve is bent
-exhaust leak
-defective head from jegs
-calculations were wrong and the cam is too big
-the squeed came from a roller rocker
-voodoo magic and curses

if anyone could throw some pennies at me that would be awesome. need advice and maybe an adult.