Problem Really tiny rocket Exhaust

[Interceptor]

Hello I found a really cool old rocket on OH,and everything is good till the final seperation,and,then I get this really tiny exaust trail on the last stage,I don't know what gives I have changed around exhaust textures a few times,and never had any problems like this,any help would be great.Thanks P.S there's a pic at the bottom of the page.:facepalm:

MISC]
cog=5
focus=1
[PARTICLESTREAM_1]
NAME=RLAexhaust
SRCSIZE=1.9
SRCRATE=800
V0=70
SRCSPREAD=0
LIFETIME=.5
GROWTHRATE=-0.15
ATMSLOWDOWN=0.0
LTYPE=EMISSIVE
LEVELMAP=LVL_PSQRT
LMIN=0
LMAX=0
ATMSMAP=ATM_PLOG
AMIN=1e-4
AMAX=1
TEX=Contrail2
[PARTICLESTREAM_2]
NAME=RLAexhaust2
SRCSIZE=5
SRCRATE=800
V0=70
SRCSPREAD=0
LIFETIME=.5
GROWTHRATE=-0.15
ATMSLOWDOWN=0.0
LTYPE=EMISSIVE
LEVELMAP=LVL_PSQRT
LMIN=0
LMAX=0
ATMSMAP=ATM_PLOG
AMIN=0.7e-7
AMAX=1
TEX=Contrail2
[STAGE_1]
Height=31.5
Diameter=6
EmptyMass=45000
FuelMass=755000
Thrust=11760000 
BurnTime=210.
off=(0.,0.,0)
MeshName="kodiakspace\rlas1"
eng_1=(0.,0,-17)
eng_diameter=0.01
ENG_PSTREAM1=RLAexhaust2
[STAGE_2]
Height=12.65
Diameter=6
EmptyMass=10000
FuelMass=140000
Thrust=2940000 
BurnTime=160.
off=(0.,0.,20.8)
MeshName="kodiakspace\rlas2"
eng_1=(0.,0.,-5)
eng_diameter=0.01
ENG_PSTREAM1=RLAexhaust
[FAIRING]
N=2
MeshName="kodiakspace\rlafair"
Diameter=6
Height=18.5
angle=0.
off=(1.75,0,35)
EmptyMass=5000
SPEED:10
[PAYLOAD_1]
off=(0.,0.,33)
speed=(0.,0.,.1)
rot_speed=(0.,0.,0)
Meshname="carina"
Name="carina"
Module="carina"
Diameter=.1
Height=.1
Mass=30000.

 

[astrosammy]

eng_diameter=0.01

Set this to something like 1 and it should be better.

 

[Interceptor]

Thanks astrosammy, I try your solution out.

---------- Post added at 01:11 PM ---------- Previous post was at 06:58 AM ----------

That worked ,thanks again