rffit -d 98709_4801.dat -s 4801 -F $ST_DATADIR/data/frequencies.436.txt -c T12-post.tle 
Loaded 101 orbits

command i

rms limit (kHz): .1

71273: 0.088 kHz 435.950538 MHz | HCT-SAT1                
71304: 0.063 kHz 435.950600 MHz | FLOCK 4G-19             
71270: 0.058 kHz 435.950590 MHz | SCOT                    
71340: 0.081 kHz 435.950546 MHz | SATURNIN-1              
71372: 0.071 kHz 435.950559 MHz | INNOCUBE                
71294: 0.072 kHz 435.950614 MHz | FLOCK 4G-9              
71352: 0.065 kHz 435.950600 MHz | IRIS-F3                 
71298: 0.070 kHz 435.950610 MHz | FLOCK 4G-13             
71342: 0.060 kHz 435.950598 MHz | FOSSASAT-2E18 (TAT-A)   
71339: 0.063 kHz 435.950564 MHz | AE1D                    
Identified 10 candidate(s), best fitting satellite is 71270 - SCOT                    .

command g

================================================================================
Get TLE from catalog, provide satellite number: 71372
Loaded 101 orbits
# Satellite ID = 71372
# Satellite designation = 25009Q
# Epoch year = 2025 day = 14.83624836
# Eccentricity = 0.0007295
# Equatorial inclination = 97.4389 deg
# Argument of perigee = 359.8410 deg
# Mean anomaly = 343.0607 deg
# Right Ascension of Ascending Node = 97.5431 deg
# Mean Motion (number of rev/day) = 15.16246981
# First derivative of mean motion = -1.308400e-04
# Second derivative of mean motion = 0.000000e+00
# BSTAR drag = -6.7803e-04
# Orbit number = 1

================================================================================

Select last pass

command 2 5
command f
command r
command 6
command f
command e
command f

As you can see the rms is now 4.112 and the data points from the last pass do not match

i have already put the data in this directory, maybe you can see what is going wrong