Hi need help chocolate red merckens to stiff , crisco not helping 

Paramount Crystals can be added...  Maybe it would help...

More information is needed...

When you say "too stiff", do you mean too thick?  Clumping?

Are the melts not warm enough?

Did you overheat the melts?  

Are the melts expired/old?

Usually that means the choco is OLD &/or it was overheated.  Adding Crisco is about all you can do.   Paramount  crystals is basically the same thing as crisco only made from coconut oil.

Red is the worst color to melt, of any brand.  I usually end up melting plain white and adding a ton of red coloring to it.