5X5 Fence Post Mod - Length Question

I drilled two holes in the lower flange of the 5er frame. I took a piece of angle iron and used that for a support under the fence post. I ran two bolts up thru the angle iron into the lower flange of the 5er frame and bolted them to the I beam. I had to put some 1-1/2" spacers between the fence post and frame because of the propane line running under the frame.