Taking advice on upgrading a QMS from a registrar is like asking the guy who sold you your car's undercoat and extended warranty to fix your transmission. These are SALES reps and not vetted quality experts in any sense of the word.

Furthermore, the "chat rooms" that Mr. Woodcome wants you to avoid typically have sensible and practical advice, which sometimes points out the glaring problems exhibited by registrars such as NQA and others. The real reason he doesn't want you to read that information is that you might find out just how woefully unprepared the registrars are, and how horrible their advice is.

Finally, it's a gross conflict of interest to take ANY advice from the registrar that audits your company. Anyone paying attention to the Enron fallout knows this, of course, but the registrars hope you forget. They make far less from registration fees than they do from selling training and seminars, and thus their push for these services. But in the end your QMS will look like something designed by your registrar, and not something that reflects the particular requirements and needs of your company, its industry, and your customers. 

Great read with informative pointers on ISO 9001:2015...