[Toivaluadiora]

It may help to know that many buddhist scholars doubt the veracity of all buddhist suttas. If you think about how many there are altogether its obvious that not all of them can be the teachings of the buddha. I think you'd be advised to read some texts on scholarship to get a sense of what is thought about this aspect of the suttas.

For example its widely held that the abhidhamma came much later. This text is not considered a teaching of the buddha by most but strict theravada followers.

Some scholars will indicate which suttas they think are likely to represent core teachings of the buddha. It pays to read the texts The middle discourses of the Buddha by Bhikku Bodhi and The long discourses of the Buddha by hm i can't remember his name. Gombrich is a buddhist scholar of high repute though i still haven't read any of his books.

Also on the secular buddhist forum, there are a few scholars who have positions on how to determine which are likely to be true and which are not. Its really not all an easy topic to get confidence when until you can rely on your own wide and deep study. And for that you'd have to learn pali and do some translations of your own.

If this is an inclination, you will probably find it valuable to pursue. Otherwise, over time you will work out for yourself what seems true and reasonable and what doesn't.

When you say you've seen things you can't gel with, i'd say go with your gut instinct until your experience suggests otherwise.