the sequence generator seems generates to long collagen in z dim

[HEU2021201622]

i want to use the tool ti generate the collagen based on my custom fasta file, but i found the generated collagen is too long.

my config file:
`species: "custom"
sequence_generator: true

fasta_file: "test.fasta"
crosslink: false
n_term_type: "NONE" # Options: "HLKNL", "NONE"
c_term_type: "NONE" # Options: "HLKNL", "NONE"
working_directory: "./output" `

my fasta file:
`

ChainA
GPPGPPGPPGOOGPPGPPGPP
ChainB
GPPGPPGPPGOOGPPGPPGPP
ChainC
GPPGPPGPPGOOGPPGPPGPP
`