Solved Cooling Fan Duct - temp fall

I'm not sure if this is the right place to post since my robo is way beyond stock.

It has e3dV6, and Mike Kelly's X carrage modified to fit the self aligining bushings that waldo posted ( same deal on Y axis )

My problem has been that NoviceExpert(youtube)'s cooling fan ducts ( even before the changes ). press against the heater block when installed on the back and melt..if i put the duct in front it is ok doesn't melt but in both cases it sits up to high ,and I get Temp Fall error's regardless.

I just printed Gladius?'s fan duct because its adjustable, but within 30 seconds my temp dropped from 225 to 205 and threw a temp fall error. Here is a picture of gladius's fan duct.
I know I have a bunch of mods, so..im guessing i'm going to have to make my own fan duct?
Or is there any others out there that will work with my mods

 

I think this may be the problem.. suddenly with no fan I can't really get past 230 AKA..around then it takes forrrrrrrrrrrreeeeeeeeeever to heat up. I used to be able to go to 270? or whatever the firmware stops it at.

I have the e3dV6 with whatever heatercore came with that.

Got any recomendations for a new heater core?

 

Lol nice 5 of them for 9 bucks. ordered.

 

Noticed with my new R1+ it temp fall errors all the time with PETG ( 235 temp ) If I use the cooling fan. PLA is fine.

I guess the stock heater, and E3D heater just cant keep up with 235deg and the fan on? ( PLA works fine with the cooling fan but i print that at about 200 )

I have the 40watt heaters now so I can try those.

 

Yea i finally got the titan running on my original robo R1.. and normally i have time to pick ooze off the nozzle while its heating. with that 40watt heater it heats up real fast!

Since I got 5 of them for 9 bucks I think one is gonna go on the new "stock" R1+ I can't help myself they cannot stay stock long