Welcome to TradGang! This is a question better posted on the PowWow forum, because they deal with equipment related questions over there. Maybe a moderator will move it over there for you, or you can just copy your post to a new post on PowWow.
That said, I’ll throw in my 2 cents worth although there are people far more qualified to answer wooden arrow questions than I am.
Weight and spine are two different things, and you can't really correct one by adjusting the other. In other words, if you were pretty sure that your arrows were in tune with your bow with 125 grain points, you really wouldn't be solving anything by using a 100 grain point or a 150 grain point to solve a weight problem. Your overall arrow flight would probably be worse after you changed the points, even though you might be closer to the weight you wanted.
OTOH, if you just picked 125 grain points because they appealed to you without testing to see if they were what you needed to tune your arrows, that complicates the problem. A lot of people who shoot wood arrows never tune them because the wide variation in weight and spine in a typical dozen wood arrows makes them difficult to tune. So they just use some kind of spine chart and leave it at that.
But really, a 25 grain difference in weight among wood arrows is not very significant, especially on shots 20 yards and in. So I would just keep the points consistent unless you think a different point weight will improve the tuning, and then change all the points at the same time.
When I used to shoot wood arrows, I would buy 2 dozen shafts and hope to get a dozen arrows that were fairly close in weight and spine. The other dozen I would use for fun shots and roving.