TEVO Tarantula Owners Group

Due to the upgrades I've added to my Tarantula's carriage, the weight seems to have stretched the default Z-axis coupling. I'm looking at this rigid coupler on Amazon but I'm not sure this is a good choice. What do you guys/gals think? If no, what would you suggest?

I am running the no-sand oldham coupler, so any out-of-straight in the rod should be taken out by that, no?

Recently had to replace some parts on my Tarantula, so I figured I might as well do some much-desired upgrades while I was at it

so just wondering which X carriage is the best, cause I really am not fond of the stock one
I do have 2 blower fans that i plan on using, but the stock hotend, so I wouldn't mind looking at something that can use both
but there are so many options, so I wonder which one do you feel is the best?

I just got a tarantula and finished building it.

First thing I noticed was when homing the motors will not stop. Then I tried to manually move them in the display to see if they stop on the endstop. Oddly enough I found it wasn't the end stop problem but the Y axis moves Z and Z axis moves Y. I do have them plugged in correctly and ended up reversing the plugs. I am wondering if doing this will affect my prints and is there a way to correct this?

Second thing is that no matter what position I mount the motor and screw in the springy metal thing the Z axis lead screw SQUEAKS and moves around ALOT! The Metal spring like thing is also bent. When inspecting the lead screw, it is not bent in fact straight.

I have no Idea what is happening but if you can help me, please do!

Any ideas what may cause it?