No offence taken Jim. I understand your questions and where you are coming from. There is nothing wrong in asking genuine questions.
Just as Radioman said, there are a lot of factors that affect the max speed of any machine on any given day. I do a lot of tinkering on my bike, frequently swaping carbs and exhausts, so there are not many direct comparison days that I can point to, but the fact is that there can easily be 5mph difference +/- in top speed any day of the week. I have hit 100 sitting straight up several times (and done so within 1/2 mile) , and on other days I have topped out in the lower 90's, with the bike just not wanting to do any more regardless of the distance. When I do a speed test I do it on a flat road, and if at all possible I do it going in both directions just in case there is a slight slope, or breeze, or whatever. That way, if there is a difference, by going in both directions it will tend to cancel out that difference. The fastest I have ever gone on this Savage is 105...once, just past 100 2-3 other times. As far as I can tell the speedometer seems to be pretty accurate, which is suprising to me since stock motorcycle speedo's are notoriously not accurate...at least the old style ones anyway.
Radioman, you mention that your bike runs better at about 7/8's throttle than at full throttle, which would indicate that you are likely running rich on the top end. Something like that can quite easily make a 5-10 mph difference in top speed when compared to a carb which is jetted/tuned more precisely. It does not take much of a carb, or timing, or valve, or ignition, or tire pressure, or other issue to affect the performance of a machine. It is a constant effort to keep the thing in peak condition. It is a challenge for sure.
The first non-stock carb I ever put on my Savage was the best performing carb of all of the ones I have tried. I wish I still had that carburetor...I really do. There was something about it...not sure exactly what it was...but it was different. It pulled as strong as any other in the low-mid range but when it got in the high range it was just amazing...it was as if it did not want to stop...so strong. It was some kind of take-off on an Edelbrock. It had a round slide like the MIkuni/Amal but had the jets/needle like the Edelbrock Quicksilver. Edelbrock says they never made one like that, but it did have the Edelbrock name on it. I even bought extra needles for it. Anyway, it was a great carb. Stuff like that can make a significant difference in performance.
I have no proof of my bikes performance, or lack thereof on other occasions, but I stand by my claims. When I talk of what I have done I try to keep it as straight as possible, no if's, and's, or but's. I think I have some integrity in this regard. I have tried to be square with everyone to the best of my ability, and I think most people I have dealt with will back me up on this.
I am excited about the possibilities of the Veypor, though at this point I am not sure that I am using it exactly right yet. With more experience, and more data to look at and compare, I feel confident that it will be a valueable performance tuning aid and useful road guage.
No doctoring of the numbers either.