Dear friend I am Linh.
I am Top Vtiger Developer and have much experience in customising Vtiger system from 5.3, 5.4 to 6.0. Please check out my review to see.
About your project I have some questions
+ I checked your PDF Service Contract and see more three blocks[ Device, Planned Visit, Milestone payment] at Edit and Detail View. This is ok. But problem at Report information when run Cron jobs. Can you explain for me about layout, how does it look? and it will be html page or a PDF to be send to admin
I am serious developer so want to clarify with you any problem.I am happy to reply you by hourly and report daily about progressing of work.
Best regards
Linh