Pics would really help, but yes..... 'Tacoing' is frequently caused by excessive heat, but with no strain info or pics, it's hard to say.
Myself, I have 4 Indica/Sativa mix, about 50/50, and a couple that are heavy on the Indica side in my closet I use with CFL's for Winter, and during lights off during the day, it can get as high as 90 in there during the day, and I have no tacoing, but I do have some foxtailing which I attribute to the heat.