I am pulling wire through a hdpe conduit smooth wall and we are installing wire lube but the pressure it is taking is not good.It is a 1 1\2 conduit and I am pulling a six stand fiber over a 500 foot run.Is there any ideas on a easier way,the tension is very high and I am worried about breaking the fiber.We blew a string in with no problems and there is no blockage,I never had this problem before.any ideas would be greatly appreciated.

Open your conduit every 100' and try pulling is sections.

500 ft. on a single pull is a lot. Even a single loop will hang it up. What is cable size in relation to ID