Maneuver planning uncorrect?

[Captain Spaulding]

Hi!
I have a strange issue i never had before and i cant find the mistake.
I am sending a ship to Moho, have a descending node of 0,1 and plan my maneuver as usual by setting my orbit and then moving my maneuver node until i have an approach to Moho.
So far so good, but when i do the burn, the result is that there is no approach at the end, Moho is nearly at the opposite position when i am there.
When i save the game before i burn and reload, the maneuver node shows the "correct" outcome of the burn - so that there is absolutely no approach to Moho.
When i start moving the maneuvre node again to a point where i have an approach and do the burn it ends up in a totally wrong position again.
I am not using any mods.
I have no idea where the problem is.

Thanks if you know any help

[Chibbity]

A. How long is the burn?

B. What mode is your navball in? Surface, Orbit, or Target?

C. Screenshots? It's hard to picture what you're saying.

[jlking3rd]

I have made the navball mistake before. You think you are in orbit but the game changed it to target and you just end up burning up fuel.

Isn't there a feature where the maneuver node will show you future orbits? Is it possible you need to take another trip around Kerbol before starting the burn?

[Captain Spaulding]

First thanks for your quick answers, i feared that its hard to understand what i mean.
I now set a new maneuvre 390 days in the future hoping it will work then.
I loaded an old save - my nav ball is in orbit mode at that state, but maybe there is the problem.
The burn length is 17:41 min.
I played with the node and noticed the following:

https://steamcommunity.com/sharedfiles/filedetails/?id=1764181654

https://steamcommunity.com/sharedfiles/filedetails/?id=1764181701

The maneuver nodes a just a few seconds away from each other and i end up in so different positions?

[jlking3rd]

Moho is in a pretty elliptical orbit. I noticed that in one of your maneuvers your Pe is just below Moho's orbit and in the other it is a bit higher. Maybe just do it as a two part maneuver. Drop your Pe down to Moho's orbit and than at your Pe add a maneuver to drop your Ap down until you get an encounter. I noticed the KSP Wiki suggests setting up a circular orbit between Eve and Moho and wait until Moho is between you and Kerbol to setup your final encounter.

[Captain Spaulding]

Thats a a smart idea, i will try this later.
Thank you!

[Chibbity]

I find a correction burn as you arrive is often easier than trying to hit it perfectly from step one.

[Captain Spaulding]

i have over 400 hours in this game and i never saw this as an option :( could have made my kerbal life a lot easier^^