N Scale Interlocking tower

https://www.dropbox.com/s/ushr49rjhyid5v4/pintpt1pdf.pdf?dl=0
https://www.dropbox.com/s/gkb4sgis0z01hzm/pintpt2pdf.pdf?dl=0
https://www.dropbox.com/s/b75bsc2kkwdps5h/pintpt3pdf.pdf?dl=0
https://www.dropbox.com/s/8u8bqx3g8huwhvc/pintpt4pdf.pdf?dl=0